Crystallography Open Database

Information card for entry 7103623

Preview

Coordinates	7103623.cif
Original paper (by DOI)	HTML

Structure parameters

Formula	C42 H74 Ca N3 O Si2
Calculated formula	C42 H74 Ca N3 O Si2
Title of publication	Lactide polymerization by well-defined calcium coordination complexes: comparisons with related magnesium and zinc chemistry
Authors of publication	Chisholm, Malcolm H.; Gallucci, Judith; Phomphrai, Khamphee
Journal of publication	Chemical Communications (Cambridge, United Kingdom)
Year of publication	2003
Journal issue	1
Pages of publication	48 - 49
a	11.912 ± 0.0001 Å
b	13.2215 ± 0.0001 Å
c	16.8877 ± 0.0001 Å
α	70.15 ± 0.001°
β	80.422 ± 0.001°
γ	63.507 ± 0.001°
Cell volume	2238.64 ± 0.03 Å³
Cell temperature	200 ± 2 K
Ambient diffraction temperature	200 ± 2 K
Number of distinct elements	6
Space group number	2
Hermann-Mauguin space group symbol	P -1
Hall space group symbol	-P 1
Residual factor for all reflections	0.0633
Residual factor for significantly intense reflections	0.0479
Weighted residual factors for all reflections	0.1362
Weighted residual factors for significantly intense reflections	0.1261
Goodness-of-fit parameter for all reflections	1.044
Goodness-of-fit parameter for significantly intense reflections	1.095
Diffraction radiation wavelength	0.71073 Å
Diffraction radiation type	MoKα
Has coordinates	Yes
Has disorder	Yes
Has F_obs	No

Version history

Revision	Date	Message	Files
209749 (current)	2018-08-16	cif/7/ Updating bibliography in entries 7103622-7103624, 7113896-7113898. Marking entries 7113896-7113898 as duplicates of entries 7103622-7103624.	7103623.cif
180139	2016-03-26	cif/7/10/ (antanas@kurmis) Replacing _[local]_cod_* tags with their equivalents from the COD CIF dictionary in multiple entries in subrange 7/10/36.	7103623.cif
134621	2015-04-02	The 'cif_fix_values' script with an option '--fix-only-weighting-scheme' and 'cif_filter' script were run over CIF files which included an incorrect value of the data item '_refine_ls_weighting_scheme'. Read the log for more details. There were more than 18k CIF files with values to modify. Usually these incorrect values include comment with formulas, but values of this data item must be an enumerator. The script creates new data item '_refine_ls_weighting_details' to store these comments with formulas, and writes the enumerator 'calc' as a value of data item '_refine_ls_weighting_scheme'. There exists some exceptions in the script.	7103623.cif
106525	2014-03-15	cif/ (saulius@koala.ibt.lt) Adding DOIs to those Chem. Comm. structure descriptions that did not have it before and that could be matched unambiguously. Unambiguously means: a) journal name is "like 'Chem%Com%'" in SQl parlour b) first author's last name is the same in COD and in PubMed b) publication year and first page are the same in COD and in PubMed database. The commands to change these files where: awk '{print $1, $2}' outputs/join-dois.tab \ \| xargs -i sh -c ' CODID=$(echo {} \| awk "{print \$1}"); DOI=$(echo {} \| awk "{print \$2}"); CODFILE=$(echo $CODID \| codid2file); if ! grep -q _journal_paper_doi $CODFILE; then ( set -x; echo _journal_paper_doi $DOI >> $CODFILE ); else echo $CODID already has DOI; fi' Some files that did not had new-line at the end had to be fixed afterwards (in the ~/struct/cod/cif/7 directory, a COD working copy): svn st \ \| awk '{print $2}' \ \| xargs cifparse -q 2> /dev/null \ \| awk -F"'" '{print $2}' \ \| xargs perl -i -pe 's/_journal_paper_doi/\n_journal_paper_doi/' The working copy containing 'outputs/join-dois.tab' was: Path: /home/saulius/struct/xyz-extraction/dois/chem-comm-refetched-from-pubmed URL: svn+ssh://pitonas.ibt.lt/home/xray/svn-repositories/xyz-extraction/dois/chem-comm-refetched-from-pubmed Repository Root: svn+ssh://pitonas.ibt.lt/home/xray/svn-repositories/xyz-extraction Repository UUID: 9acf3947-1f02-0410-ae2a-984b57ad209b Revision: 2871 Node Kind: directory Schedule: normal Last Changed Author: saulius Last Changed Rev: 2871 Last Changed Date: 2014-03-15 11:18:46 +0200 (Sat, 15 Mar 2014) Three conflicts in files 10/81/7108128.cif, 10/81/7108130.cif and 10/99/7109903.cif were resolved manually.	7103623.cif
35909	2012-02-26	cif/7/: reorganising range 7 into a prefix-directory tree.	7103623.cif
966	2010-01-30	cif/ Adding _cod_database_code tags to all COD entries. Adding tag description to the cif_cod.dic dictionary so that COD entries can be validated.	7103623.cif
823	2009-09-25	cif/ Depositing information from the Chem-Comm-2003_01-17 and J-Org-Chem-2007_13-20 publications.	7103623.cif